/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.guicerecipes.support.internal;

import java.lang.reflect.*;
import java.util.*;

/**
 * A key of methods comparing the method name and parameter types
 * 
 * @version $Revision: 1.1 $
 */
public class MethodKey {
	private final String name;
	private final Class<?>[] parameterTypes;

	public MethodKey(String name, Class<?>[] parameterTypes) {
		this.name = name;
		this.parameterTypes = parameterTypes;
	}

	public MethodKey(Method method) {
		this(method.getName(), method.getParameterTypes());
	}

	@Override
	public boolean equals(Object o) {
		if (this == o) {
			return true;
		}
		if ((o == null) || (getClass() != o.getClass())) {
			return false;
		}

		MethodKey methodKey = (MethodKey) o;

		if (!name.equals(methodKey.name)) {
			return false;
		}
		if (!Arrays.equals(parameterTypes, methodKey.parameterTypes)) {
			return false;
		}

		return true;
	}

	@Override
	public int hashCode() {
		int result = name.hashCode();
		result = 31 * result + Arrays.hashCode(parameterTypes);
		return result;
	}
}
